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package org.dusin.teachassist.servlet.system;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.dusin.teachassistdbservice.serviceimpl.GeneralService;
import org.dusin.teachassistdbservice.util.TheUtil;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

/**
 *
 * @author dusin
 */
@WebServlet(name = "QueryCurrentTeachClass", urlPatterns = {"/servlet/class/QueryCurrentTeachClass"})
public class QueryCurrentTeachClass extends HttpServlet {
    private GeneralService instance;
    int n = 0;
    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/json;charset=UTF-8");
        HttpSession session = request.getSession();
        Integer n= (Integer)session.getAttribute("n");
        String type = request.getParameter("type");
        if(type==null) type="0";
        System.out.println("xxxx"+type);
        String teacherNo = "199800001483";
        String semester = TheUtil.getCurrentSemester();
        ApplicationContext context = WebApplicationContextUtils.getWebApplicationContext(getServletContext());
        instance = (GeneralService) context.getBean("generalService");
        List<Map<String,Object>> tClasses =instance.findClass(teacherNo, semester);
        //String result = "[{\"id\":\"1\",\"text\":\"<a target='mainFrame' href='../lab/lab.jsp'>Web apllication</a>\",\"state\":\"open\"},{\"id\":\"2\",\"text\":\"Java高级编程"+n+"\",\"state\":\"open\"}]";
        //String result = TheUtil.
        String result = TheUtil.getJSON(tClasses, Integer.parseInt(type));
        
        PrintWriter out = response.getWriter();
        try {             
            out.println(result);
        }catch(Exception e){
            e.printStackTrace();
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
